#include <iostream>
#include <iterator>
#include <algorithm>
#include <vector>
#include <cassert>
 
 
template<typename C>
C operator ~(C c) {
    assert(!c.empty());
    typename C::iterator b = c.begin();
    std::rotate(c.begin(), ++b, c.end());
    return c;
}
 
 
int main() {
    std::vector<int> v;
 
    v.push_back(2);
    v.push_back(4);
    v.push_back(7);
 
    std::copy(v.begin(), v.end(), std::ostream_iterator<int>(std::cout, " "));
    std::cout << std::endl;
 
    v = ~v;
 
    std::copy(v.begin(), v.end(), std::ostream_iterator<int>(std::cout, " "));
    std::cout << std::endl;
}
 

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